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Effectus [21]
3 years ago
10

Using the Lewis dot system, show the formation of a covalent bond between

Chemistry
1 answer:
Makovka662 [10]3 years ago
8 0
The correct answer is E
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The fuel used in many disposable lighters is liquid butane, C4H10. Butane has a molecular weight of 58.1 grams in one mole. How
viktelen [127]
The exact molecular mass for butane (C4H10) is 
12.0096*4+1.0079*10=58.1174  which is 58.1 to 3 significant figures.

Proportion of carbon in the compound
12.0096*4: 58.1174
=>
48.0384 : 58.1174

The mass of carbon in 2.50 grams of butane can be obtained by proportion, namely
Mass of carbon
= 2.50 * (48.0384/58.1174)
= 2.0664
= 2.07 g (approximated to 3 significant figures)

4 0
3 years ago
Which structure regulates water loss and gas exchange
Xelga [282]
If you're referring to plants, your answer is the Epidermis.

Hope this helps! :)


8 0
3 years ago
Help ASAP pleaseeee thank you
Artyom0805 [142]
The correct answer is B. balance
8 0
3 years ago
Which statement explains why the bonds between non metals tend to be covalent?
djverab [1.8K]

They have small differences in electronegativity

i think thats right

7 0
3 years ago
Read 2 more answers
The atomic mass of an element most nearly reflects the elements total number of
klemol [59]

Answer:

it's a

Explanation:

<h3> the atomic mass is the number of protons and neutrons in an element added together</h3>

3 0
4 years ago
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